Device for holding bolts of transmission-cases



R. LIBENSCHEK. DEVICE FOR HOLDING BOLTS 0F TRANSMISSION CASES.

APPLICATION FILED SEPT-Z3, I919. 1,337,084.

Patented Apr. 13, 192%.

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f BY I 1 K I UNITED STATES PATENT orrron.

RUDOLF LIBENSCHEK, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TOSLAVKO LOVRENGIE, OF BELLEVUE, PENNSYLVANIA.

DEVICE FOR, HOLDING Specification of Letters Patent.

Patented Apr. 13, 1920.

Application filed September 23, 1919. Serial No. 325,733.

To all whom it may concern:

Be it known that I, RUDoLr Lnsnxsornnr, a citizen of Jugo-Slavia,residing at Pittsburgh, in the county of Allegheny and State ofPennsylvania, have invented new and useful Improvements in Devices forHolding Bolts of Transmission-Cases, of which the following is aspecification.

This invention relates to a multiple socket wrench, and moreparticularly to a wrench specially adapted for use in connection withautomobile transmission gear casings.

One of the main objects of the invention is to provide a wrench capableof being readily applied to the securing bolts of a transmission case soas to hold the same against turning permitting these bolts to be readilyremoved by one man. Another object is to provide a wrench which isreadily connectible so as to be used at either side of the case,selectively. A further object is to provide a wrench of this type whichmay be readily produced and sold at low cost. Further objects willappear from the detailed description.

In the drawings Figure l is a top plan view of a wrench constructed inaccordance with my inven tion.

Fig. 2 is a side view of the same as applied to the left side of atransmission case.

Fig. 3 is a sectional view taken substantially on line 3-3 of Fig. 1.

Fig. 4 is a top plan view of transmission casing with wrench applied tobolts at right hand. side.

This wrench will be described and illus trated as used in connectionwith the transmission casing of the Ford automobile, though it will beunderstood that it can be adapted to other similar makes of casings. Thecrank casing illustrated in Fig. 4: is of substantial ovoidal outline inplan view, tapering from front to rear. This casing A is formed of twosections a and 7) having abutting peripheral flanges c and (Z,respectively, provided with alined openings receiving securing bolts eon the lower ends of which are screwed nuts In practice there are sixopenings provided at each side of the casing, the first five from thecasing recelving bolts 6, and the last opening receiving a machine screwthreaded into the lower section of the casing.

In constructing my wrench I bend a piece of steel rod of suitable gageand temper so as to form a suspending frame 1 which conformssubstantially in outline to one side of casing A. This frame is providedwith a plurality of closed loops 2 which correspond in their relation toeach other to the first four bolts 0. At its rearward end, frame 1 isprovided with an eye 3 which loosely receives an eye t of a link 5formed at its free end with a loop 6, the distance between this loop andthe last loop 2 corresponding to the distance between the fourth andfifth bolts of the transmission casing. Each of the loops 2 passesloosely through an elongated slot 7 provided through a flattened upperportion 8 of a hexagonal socket 8 adapted to fit snugly over the head ofone of the bolts 9. The sockets are thus suspended from the frame so asto be readily adjusted over the heads of the bolts at either side of thetrans mission casing.

In using the wrench, the sockets are fitted over the bolt heads at oneside of the casing, after which the nuts may be readily removed, as theframe 1 and the sockets cooperate to securely hold any particular boltagainst turning. This wrench has been thoroughly tested under actualworking conditions and has been found very satisfactory in this respect,it being possible for one man to readily remove the bolts from the crankcasing, whereas without a wrench of this type it is necessary to employtwo men. By inverting frame 1 the sockets 8 may be caused to easily turnabout loops 2 so as to readily adapt the wrench for use at either sideof the crank casing, socket 8 carried by link 5 being also readilyturned about loop 6 for a similar purpose. t frequently happens that thelast or fifth bolt at the left side of the casing is positioned beneaththe valve operating mechanism of the motor and a thin wrench has to beemployed for gripping this bolt. The provision of link 5 permits thesocket 8 to hang down out of the way, in such instances, so as not tointerfere in any way with the use of the other four sockets in themanner described.

While I have illustrated and described herein what I have found bypractical experience to be the most satisfactory embodiment of myinvention it will be evident that slight changes in detail ofconstruction and arrangement of parts may be resorted to withoutdeparting from the field and scope of the invention and I intend toinclude all such variations, as fall within the scope of the appendedclaims, in this application in which the preferred form only of myinvention is disclosed.

Having described my invention, what I claim is:

1. In a device of the character described, a frame correspondingapproximately in outline to one side of a transmission case and providedwith a plurality of spaced loops, and socket members depending from saidloops and loosely connected to the same so as to be readily adjustableabout the loops.

2. In a device of the character described, a supporting framecorresponding approximately in outline to one side of a transmissioncase, a plurality of sockets depending therefrom, a link loosely securedto one end of said frame, and a socket member carried by said link. p r

In testimony whereof I affix my signature.

RUDOLF LIBENSCHEK.

